/Engine/Source/Editor/BlueprintGraph/Classes/EdGraphSchema_K2.h
Called when asset(s) are dropped onto the specified pin
virtual void DroppedAssetsOnPin ( const [TArray](API\Runtime\Core\Containers\TArray)< [FAssetData](API\Runtime\CoreUObject\AssetRegistry\FAssetData) > & Assets, const FVector2D & GraphPosition, [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * Pin ) const